Are We Allowed to have a gun in an RV for protection?

US Federal Law protects temporary enclosures (cabin, motel room, RV, tent) as a LEGAL RESIDENCE. You are permitted to possess and carry a loaded firearm within your campsite (temporary residence) without need for special permits, as it qualifies as a "residence". I live in California, more or less the most restrictive state in the nation, so I HAVE and MUST be aware of these laws. We are tent campers and have/possess handguns at all times. I carry in my vehicle at all times, including LEGALLY on military bases. When I travel to D.C., I fly to BALTIMORE airport and disembark for my rent-a-car there as I don't need to store my firearm at the airport in DC, but rather LEGALLY "pass through" DC, following federal carry laws (inside a lockbox, with the loaded magazine not attached, but in the same container), and staying overnight on Pennsylvania Avenue, as I'm "passing through". Same rules when I visit NJ. Sure, check the laws within your states of travel, follow the NRA guidelines, and understand the Constitution's federal protections regarding 50-state "residence" rights you have.